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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Revenues |  |
Rental income | $ 8,371,292 | $ 7,850,870
Total revenues | 8,668,322 | 8,110,979
Expenses |  |
Property operations | 3,577,358 | 3,262,603
General and administrative | 2,126,804 | 1,826,446
Depreciation and amortization | 1,438,908 | 1,398,358
Business development | 124,428 | 198,000
Total expenses | 7,267,498 | 6,685,407
Operating income | 1,400,824 | 1,425,572
Other income (expense) |  |
Dividend and interest income | 71,666 | 76,296
Unrealized gain on marketable equity securities | 193,705 | 15,517
Interest expense | (1,075,576) | (897,937)
Total other income (expense), net | (810,205) | (806,124)
Net income and comprehensive income | $ 590,619 | $ 619,448
Earnings per share |  |
Basic | $ 0.08 | $ 0.08
Diluted | $ 0.08 | $ 0.08
Weighted average shares outstanding |  |
Basic | 7,699,966 | 7,622,287
Diluted | 7,702,117 | 7,624,122
Other property related income |  |
Revenues |  |
Revenues | $ 283,570 | $ 260,109
Management fees and other income |  |
Revenues |  |
Revenues | $ 13,460 |

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